public class Demo5 {
    private  static Object locker1=new Object();

    private  static Object locker2=new Object();

    public static void main(String[] args) {
        Thread t1=new Thread(()->{
            System.out.println("A");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            synchronized (locker1){
                locker1.notify();
            }
        });
        Thread t2 =new Thread(()->{
            synchronized (locker1){
                try {
                    locker1.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            System.out.println("B");

            synchronized (locker2){
                locker2.notify();
            }
        });
        Thread t3=new Thread(()->{
            System.out.println("C");
        });

        t1.start();
        t2.start();
        t3.start();
    }
}
